<?php
/**
 * This file is part of workerman.
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the MIT-LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @author    walkor<walkor@workerman.net>
 * @copyright walkor<walkor@workerman.net>
 * @link      http://www.workerman.net/
 * @license   http://www.opensource.org/licenses/mit-license.php MIT License
 */
namespace Workerman\Protocols;

/**
 * Text Protocol.
 */
class Text {

	/**
	 * Check the integrity of the package.
	 *
	 * @param string $buffer        	
	 * @param ConnectionInterface $connection        	
	 * @return int
	 */
	public static function input($buffer = NULL, $connection = NULL) {
		var_dump("input");
		return strlen($buffer);
		// Judge whether the package length exceeds the limit.
		if (isset($connection->maxPackageSize) && \strlen($buffer) >= $connection->maxPackageSize) {
			$connection->close();
			return 0;
		}
		// Find the position of "\n".
		$pos = \strpos($buffer, "\n");
		// No "\n", packet length is unknown, continue to wait for the data so return 0.
		if ($pos === false) {
			return 0;
		}
		// Return the current package length.
		return $pos + 1;
	}

	/**
	 * Encode.
	 *
	 * @param string $buffer        	
	 * @return string
	 */
	public static function encode($buffer) {
		var_dump("encode");
		// Add "\n"
		return $buffer . "\n";
	}

	/**
	 * Decode.
	 *
	 * @param string $buffer        	
	 * @return string
	 */
	public static function decode($buffer) {
		var_dump("decode");
		// Remove "\n"
		return \rtrim($buffer, "\r\n");
	}
}